Athearn F7-B Dummy - Wheel Size Question

Greetings,

I am assembling a B&O diesel trainset using drawbar connections. It will be
an A-B-A with the two A-units powered, and the B unit not powered. Since my
railroad is on deferred maintenance and an economy wave, I am using Athearn
Blue-Box F units, and they are of the Superpower type. The A units have a
very large weight casting. The B unit does not. I am weighting that with a
nice, low center of gravity to avoid stringlining. Unfortunately, I do not
like the plastic wheels on the B unit. I would like to replace them with
metal wheels. I am also thinking of using the B-unit as some sort of
power-pickup
car for other applications. It would be nice not to have to replace the
truck assemblies. Can someone tell me the correct size, and perhaps who
makes metal replacements? (Intermountain? Proto?). I would be very
appreciative of any advice you can offer.

Thanks,

--
tbone
Visit The Janis Center Railroad Club, Columbus, Ohio www.janisjunction.org


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